Nicotine concentration in e-liquids is displayed as a percentage, typically ranging from 0% (nicotine-free) to around 5% and sometimes higher
Baseline information on leisure time physical activity was divided into: no exercise, moderate exercise and regular exercise
Department of Health and Human Services, Centers for Disease Control and Prevention, National Center for Chronic Disease Prevention and Health Promotion, Office on Smoking and Health, 2004 [accessed 2012 June 15]
"The bottom line, you know, is regardless of how old a person is, the day they start using tobacco is the day they start putting their body at risk for cancer," he said
In 2020, the figure was 4%